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Manifest is unencrypted — leaks blob count and sizes #14

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opened 2026-02-08 17:16:27 +01:00 by clawbot · 0 comments
clawbot commented 2026-02-08 17:16:27 +01:00
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The manifest (manifest.json.zst) is compressed but NOT encrypted. It contains:

  • Blob hashes
  • Blob compressed sizes
  • Blob count
  • Total compressed size
  • Timestamp

Anyone with read access to the S3 bucket can see how many blobs a snapshot has, their sizes, and when the backup was taken. The database (db.zst.age) IS encrypted, so file paths and names are protected.

This should at minimum be documented as a known limitation. Ideally, the manifest should also be encrypted (it is only needed for operations that already require the private key, except for shallow verify and list).

Ref: parent issue #1

The manifest (`manifest.json.zst`) is compressed but NOT encrypted. It contains: - Blob hashes - Blob compressed sizes - Blob count - Total compressed size - Timestamp Anyone with read access to the S3 bucket can see how many blobs a snapshot has, their sizes, and when the backup was taken. The database (`db.zst.age`) IS encrypted, so file paths and names are protected. This should at minimum be documented as a known limitation. Ideally, the manifest should also be encrypted (it is only needed for operations that already require the private key, except for shallow verify and list). Ref: parent issue #1
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Reference: sneak/vaultik#14
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